Do mysteries exist? Or, is there usually an explanation for everything?
Did the discoverers of King Tut’s tomb open themselves up to a deadly curse? Or, do people sometimes die in a strange, untimely manner? Are the mid-western crop circles proof of aliens visiting earth? Or, simply a case of what a few artistically inclined, Jack Daniels inspired rednecks can do with a couple of 4-wheel drive vehicles under a full moon? However, nobody has an answer surrounding the mystery of why Carey Price can’t stop anything less than a beach ball.
Today’s situation, file #742, titled “The Mystery Puddle”, has us examining the case where a homeowner, upon descending into his basement, discovers a small section of his carpet drenched in water. A visual inspection confirms that the sump pump is working, and there appears to be no type of rain water, or sewer type backup. Therefore, we’re not talking flood.
Furthermore, there’s no water trickling down due to a cracked pipe or leaky fitting from the kitchen above, while the gyprock on the finished basement wall adjacent to the puddle, is completely dry. So, where’s this water coming from? Again, we’re not talking about a ton of water, but still enough squishy dampness in the carpet to soaker you if you happen to be wearing socks or slippers.
As always, when something happens for the first time, we refer to problem solving question number one, that being, what changed? There are no apparent faults in the piping, wall, or concrete floor, and, with average temperatures well below zero, there’s no winter thaw that could have put added pressure on the foundation or weeping tile. So, what’s up?
This water couldn’t have just appeared out of thin air. Well, maybe not thin air, but just maybe, out of thick air. Getting back to the question concerning what changed? We discover that our subject is a good neighbor. With the person next door having water issues, as in no water, due to a broken main line, our fellow was helping out by feeding his neighbor’s home with water 24 hours a day, for about two days, until the situation was remedied. As a result, the copper line feeding into our subject’s home was continually being fed with water, very cold water, as it strived to serve two homes. So, what happened? And, where did the pooling water come from?
Water enters the home via a one inch copper pipe that feeds off the city’s main line. During the winter months, this water is very cold, sometimes just a few degrees above freezing. If the water enters the home, and just sits in the pipe, seeing occasional movement by means of clothes washing, showering, cooking, or whatever, then both the water and intake copper pipe will warm up to room temperature. However, if the water is always flowing, as in the case of supplying a few homes with several occupants, or if the person you’re supplying water to happens to be building a regulation sized hockey rink in their backyard, then the cold water entering your home will stay cold, as will the pipes. That’s the, what’s happening?
When a cold pipe is left in a warm environment, condensation occurs. That’s where the water came from. In this case, the intake copper pipe was buried behind the drywall. With the copper pipe in a constant state of cold, condensation resulted to the point where water droplets would run down the pipe, through the gaps in the framed wall, then hit the concrete floor, spreading underneath the carpet. Solution to pipes sweating or creating condensation? Wrap the cold pipes with lengths of foam insulation, reduce the moisture content of the basement air by means of a HRV unit or dehumidifier, run a few oscillating fans in order to help circulate the air, and keep those backyard rinks somewhat smaller than regulation. Case #742 closed.